ISHS Acta Horticulturae 165: III International Symposium on Vaccinium Culture
MANAGEMENT STUDIES WITH THE CULTIVATED LOWBUSH BLUEBERRY |
| Author: | C. Roger Blatt | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Abstract:
The lowbush blueberry selections "Augusta", "Chignecto", 206 and 74–2 have been fruited for the 5th time (year #8) in ongoing experiment. Results in Table 1 indicate that for all cultivars (treatments combined) and for all treatments (cultivars combined) double cropping prior to a sprout year will increase yields in the subsequent crop compared with only one crop prior to a sprout year. Also, it made little difference what form or rate of nitrogen fertilizer was applied in the sprout year as the yield from the control (no N) treatment was equal to or greater than the yields from the nitrogen treatments. Thus, the management practice of two consecutive harvests prior to a sprout year increased subsequent yields an average of 29% compared with the practice of only one harvest prior to a sprout year. Table 1 - Marketable yields (t/ha in year 8) from four lowbush blue- berry cultivars receiving two management practices and five nitrogren fertilizer treatments.
*kg N/ha, +Years after transplanting. The lowbush blueberry clones Augusta, Brunswick, Chignecto and 510 were planted in a Berwick sandy loam (pH 4.8–5.2) in June 1980. Three spacíng schemes were used: (1) standard spacíng (1.0 0.5 m) giving approximately 20,000 plants/ha; (2) double row alternate spacing to give approximately 24,000 plants/ha; and (3) triple row alternate spacing to give approximately 28,500 plants/ha. The first crop was harvested in 1982 and yield data is presented in Table 2. This experiment is an attempt to minimize the time necessary for these plants to form a solid bed by comparing the single row standard spacing with two other plant densities. The yields in gms/plant show | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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